<div *ngFor="let item of dataWithStr; let i = index" class="am-picker-col">
  <div class="am-picker-col-indicator " style="top: 102px;" [ngStyle]="indicatorStyle"></div>
  <div id="{{ i }}" class="am-picker-col-mask" style="background-size: 100% 102px;"></div>
  <div class="am-picker-col-content">
    <div id="{{ i }}" *ngFor="let val of item; let i = index" class="am-picker-col-item">
      {{ val.label ? val.label : val }}
    </div>
  </div>
</div>
